Finished section 5.12 - Updating Posts
Added the 'form' partial to keep the New and Edit views DRY (completing section 5.13 - Using partials to clean up duplication in views)
Finished section 5.14 - Deleting Posts
Finished all of Section 6 - Adding a Second Model
Finished Section 7 - Refactoring
Finished section 9 - Security